Where can I find the connection cables for additional equipment and network on my airhandling unit?

If you have a airhandling unit designed as a cabinet, the connections are located on the top of the unit, at the front between the duct connections. If you have a unit mounted in the ceiling or installed on a wall, for example a CL-type unit, the connections are located on one of the long sides. In many cases, these connections may be hidden behind an enclosure. In such cases, an inspection hatch should be installed to provide access to the connections.